Who: After Aby Rosen and Samantha Boardman Rosen’s annual dinner at The Dutch, guests made their way to the W hotel’s nightclub, The Wall, where they rubbed shoulders with art world bigwigs Damien Hirst and Larry Gagosian, and fashion darlings like models Karolina Kurkova and Jessica Hart.

Why: The party marked the launch of Dom Perignon Limited Edition designed by artist Jeff Koons. Bottles of the bubbly and DJ Ruckus kept the star-studded crowd going late into the night.